Steam-boiler.



PATENTED NOV. 14, 1905.

F. STADLER.

STEAM BOILER.

APPLwATIoN FILED JUNE 2s, 1905-.

2 SHEETS-SHEET 1.

y Q I l al /A/l/E/vof? FRA N K STADLE F?.

A TTOHNEKY PATENTED NOV. 14V, 1905.

F. STADLER.

STEAM BOILER.

l APPLICATION FILED JUNE ze. 1905.

2 SHEETS-SHEET 2.

INVENTO? FRA NK .STAD LER.

By l /Jry ATTORNEYS narran sfrafrns FATENT FFICF.

.STEAM-BOILER.

Specification of Letters Patent.

Fatented Nov. 14, 1905.

Application led June 26,1905. Serial No. 266,991.

Vo1 Illinois, have invented a new and Improved Steam-Boiler, of whichthe following is a specification.

rIhis invention more particularly relates to that class of uprightsteam-boilers having horizontal tubes, and it seeks to provide certainimprovements in this type of boiler whereby to provide an economical butstable construction of boiler in which the several parts are especiallydesigned and combined so that they can be readily separated to providefor easily and expeditiously cleaning or repairing the same without thenecessity of goingI inside thereof.

With the above and other objects in view, which will hereinafter appear,my invention comprehends certain improved arrangement and detailedconstruction of parts, all or' which will be hereinafter fullydescribed, pointed out in the appended claims, and illustrated in theaccompanying drawings, in which- Figure l is a vertical section of anupright boiler constructed in accordance with my invention. Fig. 2 ishorizontal section of the same on the line 2 2 on Fig. 1. Fig. 3 is ahorizontal section on the line 3 3 on Fig. l. Fig. 4 is a similar viewon the line 4 4 on Fig. l. Fig. 5 is a detail perspective view of aportion of the upper connection of the boilershell, and Fig. 6 is asimilar View of a portion of the lower connection of said shell. Fig. 7is a detail viewot1 a slightly-modified form of my invention.

In the practical application of myinvention the boiler shell or casingis composed ot' two cylindrical sections A A', the lower one, A', ofwhich is of a height sufficient to surround the lire-pot K, while theupper section incases the nest of water-tubes and extends above the sameto form the upper end of the steamspace, that has the usual manhole P,as shown.

The bottom ot' the lower shell or casing section A' is securely boltedto the base or supporting member a2, and its upper end is firmly rivetedto a cast-steel ring O, Whose horizontal portion c opposes a similarcast ring O', riveted to the lower end oi' the upper casing or shell A,and the said rings O C' are firmly secured steam-tight by thebolt-andnut connections D D, as shown. The bottom rim o has a verticalflange ct', located inside the shell A', which forms a support for thegrate-bars G G of the fire-box, which is formed in the lower end of theline-sheet H, the lower end of which flares outwardly and is riveted toanother vertical iiange a3 of the bottom rim o, as at L', and the saidlower end of the flue-sheet .is further braced -by the staybolts G' G',as best shown in Fig. 8.

G2 designates the fuel-opening to the lirebox, and G3 the feedway, thatopens through the outer shell and has the usual door G4.

S' S' designate the tubes, which are disposed in horizontal tiers andcommunicate with the water-space between theinner and outer shells orcasings and which run crosswise of each other, whereby to form checkeredlire-passages between them. (See Fig. 2.) The said flues are disposed inclose relation and extend to a point near the upper or crown sheet H2,which has a pendent flange 7b2 riveted to the vertical sheet ortube-casing H, and the said crown-sheet has a central outlet, to whichis riveted the otftake ,-pipe I, that passes up through the steam-spaceat the upper end of the outer shell and through the collar 7' of acast-metal plate J, the horizontal portion of which is secured by thebolts and nuts B to another cast-steel top member M, formed with apendent {iange m, to which the upper end of the shell or casing sectionA is riveted.

To firmly brace the tube-holding` and lirebox sheet or casing at theupper end, I provide a number of brace-bars N N, the lower ends of whichare detachably bolted in-bifurcated blocks O O, riveted to the top orcrown sheet H2 and whose upper ends are bifurcated, as at n n, toreceive the pendent ears r of cast blocks R, bolted to the under side ofthe top member M.

While I have shown the tube sheet or casing square in horizontal sectionand with the corners rounded, as best shown in Fig. 3, it is manifestthe same may have other shapes in plan view.

From the foregoing, taken in connection with the accompanying drawings,the complete structure and its advantages will be readily apparent. Byreason of arranging the parts in the manner shown and described aneconomical and compact but strong boiler is provided, capable ofwithstanding a very high pressure, and by'forming the casing or shell oftwo sections and joining them in the manner shown, taking out the boltsD, removing the nuts that secured the blocks R to the top plate M andthe nuts on bolts B, the entire upper section of the casing or shell canbe lifted oli and the tubes exposed, so they TOO IIO

va maximum heating-surface is obtained in a minimum amount of space.

In Fig. 7 I have shown a slightly-modified form of my invention, inwhich rings M M2 are provided, to which the plates A and J',respectively, are riveted, as at M M2, and the rings M M2 are heldtogether by bolts B, as shown.

Having thus described my invention, what I'claim, and desire to secureby Letters Patent, is-

l. A water-tube boiler comprising inner and outer shells, cross-tubesmounted in the inner shell, the outer shell being formed of twosections, means for detachably joining the said two sections, a cast rimadapted to be lirmly secured to a suitable base-support, said rim havinga vertical flange to which the lower ends of vthe inner and outer shellsare connected, and having a second vertical flange that forms a supportfor the grate-bars, a top, detachably connected to the upper end of theouter shell, and a gland for the oiTtake-iiue from the crown of theinner shell, detachably connected to the said detachable outer-shell topmember.

2. In a water-tube boiler of the character described, in combinationwith the inner or tube shell, the lire-box and the otYtake-flue; of anouter shell, comprising a lower lixedlyheld section, an upper sectiondetachably mounted on the lower section, a gland on the offtake-iue, anda top member secured in the upper end of the outer shell and means fordetachably connecting said top member to the gland as set forth. f

3. In a tubular boiler of. the character described, the combination withthe inner or tube-carrying shell, the crosswise -disposed tubes therein,the fire-pot formed in the lower end of the inner shell, and theoHtake-lue that extends up centrally from the crownsheet of the innershell; of the outer shell, composed of an upper and a lower section, thelatter being tiXedly held, means for detachably connecting the uppersection on the lower section, a gland or collar that surrounds theOiftake-iue, a top member secured on the upper end of the outer shell,means for detachably connecting said member to the collar or gland,

of the inner shell, and means for detachably connecting the upper endot' the said braces to the under side of the top member, for thepurposes described.

4. A tube-boiler consisting of inner and outer shells having water-spacebetween them, the water-tubes comm unicating with said space anddisposed in horizontal alternately -disposed tiers, the inner shellhaving an otakeiiue section projected from its crown and having itslower end iiared outwardly, a base-rim having two upwardly-extendedflanges, the lower ends of the inner and outer shells being iXedlyconnected to the outer one of the said iianges, grate-bars mounted onthe inner one of said flanges, the outer shell including an uppersection, means for detachably securing the upper section to the lowersection, a gland on the o'take-lue, a cover-plate detachably secured tosaid gland and permanently secured to the upper end of the outer shell,and the braces detachably connected at their lower end to the top of thecrown of the inner shell and at their upper end to the under side of thecover-plate, all being arranged substantially as shown and described.

5. 1n a water-tube boiler of the character described, in combinationwith the inner or tube shell, a fire-box and an oftake-liue; of an outershell, a gland on the offtake-luefrom the inner shell, a top detachablyconnected to the said gland and to the upper end of the said tube andbrace-rods whose upper ends are detachably connected to the top of theouter shell and whose lower ends are detachably connected lto the'top ofthe inner shell.

FRANK STADLER.

Witnesses:

HENRY S. ABENs, W. W. WALTERS.

' braces secured to the top of the crown-sheet i

